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Optimization of Design Parameters of a Novel MEMS Strain Sensor used for Structural Health Monitoring of Highway Bridges

The novel Micro Electro Mechanical System (MEMS) based Piezoresistive stain sensor is presented in this paper. The main goal of this sensor is to monitor the localized strain in the highway bridges especially near the crack tips. Monitoring the crack growth on the bridges can lead to early detection and prevention of bridge failures.

The COMSOL Multiphysics software was used to optimize the size of the MEMS strain sensor with the objective that the sensor could measure fine strain gradient at the crack tip.